Surface-indicator.



I Bristol, in the county et l'lart'ffirrd and State eimracnivmea'ron.

Specification ci' Lett-arc zitcnt.

Patented Oct 1 ,191 2.

Application iile. July 17, 190). erinl No. 508,174.

To all whom. 'it may vencer/n.:

lle 1t known that i.. Lewis L. Lieren, a eilte zen of the Uniieclkllatee, and resident oi of Cflim-retientB have invented certain new anduseful linprovennents in 5leefface-Imii'A calore, el which the'followingf is a full, clear, and exact specification.

This invention relai es to surface indicators, and more especially tethat Claes thereof which are em ployed to determine the true-iimningcondition of a piece of Werl: in a lathe7 grinding inaeliine, er otherinaehine tool, in order to enable the worlinnin to set theearneproperly, or te determine its; eccentrici'ty or deviation from atrue circle on its periphery. I

My invention has :for one ol' ite objects, the provision el aninstrument ei is rlaes' Whieh'may he secured in a tool-'gA el" a lathe,and srhieh is adapted te he Apeerimnfil so as te Contact ith the Werl;in any degli-wil manner Without requiriiig .a loosening; the i device inthe teelepost.

My invention has, fiirthermorf-z., for i uhject., the improvedorganizatimi mi the {celermeinlier and the 'transfer of movement there`of to the indexing mcmhetr ae Will he here luefter 'described and themeans ei the -ttaimnent of which will he particularly pointed out in theclaims.

M invention heen clem-ly illustrated in t e accompanying drawings inwhich simile-i` characters denote similar parte, and in Which--- 'FigureIl is a. top view et' my improved device/Q 2 'ie a side viewv thereof,the cover of Itheeasing ineloeing ,the el. eral operative parte 'thereofbeing rei'neverfi, and lig. I3 is a horizontaleeiilral seetion et thedevice.

Brielle stated, the device compriiaii; a shank which may he secured inthe tool/posi. of a lathe in the .fiume mannina: :my other machine-tool.iivoted on this ehaiel: and 'frictionally held thereon. the rod whichsupports the 'indicator which is also liehl frctionally on said rod :mdadapted te he rotated relatively te Said rod. The indicating mechanismeemprisee a eeler projet*` lag; beyond the casing and which le nilepieilte engage the "work, this i ieater heingg vonnec'ted by interv'eniny,`i'rnchriniem wil "m g index pointer wh y the inoveinerl e feelenmay hedei warmed at a glance L El ,xelerfineinher et' he having` a roundedhead ll and a reduced portion l? whereby said member' is rigidly ser-uml.in a lever lil which is fulcrumed on a Stihl ll rigidly held en thebottom plate 15 el lhe eaeingg which contains the operating parte. Thiseasing is provided with an auf nular rini lT the front edge out' whichis counterhmwl as at iT (see Figs; 2 and 3) to rcffeive a @over le whichmay be held i'n place on, lhe casing' hy screws 19 in screw ihrezuleifengagement with the base plate 15 above ilelerred to.

',lhe le ver lil is preferably arcuate in form te correspond 'with themetrature of the casinglango 'lli and engages with its free end Elf() anactuator "21 piveted on a Stud 22 also Secured iii the hase plate 15,the fre'e end of the eetmeter 2l resting against a pin il?,-1f'i".1ire1.l on lf i arm 2li, the lfree end Of which (frojerfifithrough a slot E25 in the e ""iiplmrigfje 'ill and carriee' an indexpointer :ai ...-eralpiagi with a series el indicator mail; :iiiown inFie'. '1. The arm 9.4 is no1*- n-al Ey iam ed toward one end Wall of theSlot; las; man in Fig. l) hy a blade spring-27 in im "ggwmnl with a pin28 which is' also wel.. ii fr he arm 34. lt will be seen that h v virtueel" this; organization any force which will he applied against the head11 egli lille leelermember to swing the lever"1-3- toward (he center el?the casing will result in movie;Y the :ii-1n Qfl around its pivot pinf/"f which preferably Secured to said-arm z. and adapted to enter areess provided therefor in the imvardly pri'ijeeting hub 30 el. thetemine' plate l5, and, furthermore, that for equal nails el' movement 0fthe feelermember il, h v reason of the change of localion el? thecontact. points with respect to the pivot-:i of Several el the members,said index minier-72?; will move Jfor unequal spaces so thateoneefiawiitly the graduations on the easirigillange "will he rmequallyspaced to represent uniform 'movements of the feelernumber. y

'lil-.Meridien .aiwnllv Yfrom the casinpgplate if?, is: a huh 3l whichis preferably Split and lits in a corresponding aperture pro vided inthe heaflporltion 3Q of a supporting rod 33 whereby the ioirurnen't is,Qilpport'ed. The huh ha@l also a screw threaded aperture to receive ascrew lfl having a conical upper portion 255 adapted to engage theeonically bored outer end of the hub 3l for the. parpme el" expandingthe splithnb into 'the aperture of the head-portion 32 QJ J elle imi.

y y be 4e io lining; "elle peeiien nelaive m jtle and Within lle Compasslee ge.

me pievicle foi positioning die er 'bodily relatively io the werk 'tening any change in tliexinol--peet f enipiising e ifi-ie-A;y elding therecl en zlni is ede-pied se be placed in n ie eflapsief, Jee be placedpeel; indicated/5 by defend-clash 'eesfecl wil-limit neceeeiibmention015 me sin i qu v e ''Oirweil emi of the shank i0 ceri-ies fl, i2 havinge. need i3 and also having en ejeituie ilineugii which seif'i :veel 33may .n.reely pese longitudinally and rotatably, lie'p ',eulei ineens im.clamping the rofl q en me sind' 2 cei'npise e 'Wesliei 25vv interpeeedn.'eelim-Ln the red 83 and the fece "3f-0f' the shank 40, ltwill,izlierefeie` be seen innere by leesening ille mit 4G? the :veel 33 maylie slid lengifuudinaflly tliiougli the sind 42 nnflftlie Washerceriiefl. ilieieby, and that, mriiieizneie9 sani, iel 33 ney lee reeieclillieiein e0 'Ue bring the feelei-ineml3ei inte any desi fe peeitien.ift "will also be enden see. laywilzne ef "hxs construction,

my, ilie ifiie-iei'iel.` Ineens :for lielcling nelieeei en. lille inei/'ei'y fliiee a e-"liieelfing the inet-rnlee eveieeff.; inasmuch esany overl'ien, i, inem lil 'pressure eieiie en the 'feder-member .i0"Wili if@ eiisin siliingging "'lie entire (levice, -.ie en' y pere ofWhieli iejlieshank 40 in Many may be mede in the peritieulei' eeninetienof ille damning inemlie-fe, en@ in lie ebene organizeieeeLeie 'bien ei'ivlie :active members of the indicator Witheet depeizingg finie inlieepiiri; oi? ille tmliy'ifelniive te seid 'rim extending' through smidslet3 index' arm being previded Will-li :i pin en. eeeli eicle of itepivot, an ninyiieeecl levef'wiveie. in seid ease, e eelei memberpi'ovide willi e roundeclmlieed eeeureel e seid minimized lever and@ejeeting lgniougli seid iiin, :in eetlueier pi'voted in seid easing inengagement with the end of seid lever and having its end in engagementwith. one ei' alie pins on the index erin, and e spying suitably seemedai one end to seid cese and 4han/ing its opposite end in engagement withe pin on 4alie index lever for returning said index erm to its normalposition,

Q.. in eenibinetien in en indicator, e cee ing having ajvall With eSlottlierein, an in dex erin pivoied centrally Within the ces--` ing'endhaving e pin on each side of its pivot, en emulated levei pivoted inseid Case, a. eeler ineinliei pijovid'ed with a lieecl :ind secured tesaid' ensueeal level.' anl 'projecting through seid slet, :in actuatorpivoted in seid casing in engagement with the end of seid levei and.having its end in engage ment with one ei the pins en the index erin,and e eping; secured et one encl i0 said cesing end having; its egpositeend in engageinen Wiili pin on the index lever foi1 i'emining said indexerin to its normal. posi- @Hee lf. .SGHMETA

